Bailroad-cae axle-box



G. w. & 1. c. GEISENDORFF.

Car-Axle Box.

Patented Feb. 9, 1858.

UNITED STATES PATEN T QFFTGE.

G. W. GEISENDORFF, OF INDIANAPOLIS, INDIANA, AND J. C. GEISENDORFF, OF CINCINNATI, OHIO.

RAILROAD-CAR AXLE-BOX.

Specification of Letters Patent No. 19,290, dated February 9, 1858.

To all whom it may concern Be it known that we, GEORGE l/V. GEISEN- DORFF, of Indianapolis, Marion county, Indiana, and JACOB C. GEISENDORFF, of Cincinnati, Hamilton county, Ohio, have invented a new and useful Improvement in the Journal-Boxes of Railroad-Cars; and we hereby declare the following to be a full and exact description thereof, reference be ing had to the accompanying drawings, making part of this specification.

Our invention consists in preventing the end play of a car axle by a provision which is exempt from liability to work dry and heat and from the consequent severe friction and rapid deterioration of the axle bearing.

The severe wear and racking to which the customary journal boxes of railroad cars, are subject from the lateral motion of the car, have in some instances found a partial and temporary remedy in the provision of a jam or check plate in front of the axle end. These devices pressing against the central portion of the axle-end, very soon work dry and heat by the powerful centrifugal action generated, however copiously supplied with oil, and have therefore in almost every instance been discarded, although an admitted benefit in other respects. Hencein the customary bearings, the step and the box are rapidly destroyed by the violent concussions and abrasions of the collar and shoulder of the axle involving great loss of power and material.

In the accompanying drawings Figure 1 represents in perspective a portion of the axle and its end bearing. Fig. 2 is an axial section through the end bearing and a portion of the axle. Fig. 3 is a transverse section through the upper part of the box immediately in front of the end hearing.

A, represents a portion of the axle and B, a portion of the box. The box is slotted (6) through its top, and recessed b) on the inside so as to receive the ends of a casting C D E F, and hold it firmly against lateral displacement. This casting consists of a rectangular block O crowned by a flange D,

and having in its under side an arch like cavity E. A short distance below the flange the casting is pierced transversely by a slot F, to receive a key G, by which it is held to its place in the box.

The parts C, D, E, F, G, collectively are styled by us the lug.

The form of the cavity E, is such that when the lug and the end of the axle journal occupy their respective places in the box, the inner face of the lug, bears against a limited portion of the end surface of the axle, comprised between the upper two thirds (or thereabout) of its margin, and the verge of the arched cavity, substantially as shown in Fig. 3.

The portion of the lug surface which touches the axle, is so shaped as to insure a close fit of the outer margin of the axle against the lug, preventing the too free escape of oil while permitting its entrance between the axle and the lug. It is found in practice that the oil which flows from the journal to the lower part of the collar is carried up by the rotation of the axle so as to constantly fill to overflowing the recess between the lug and the axle-end. Running gear whose axles are thus secured, is found when in motion to be comparatively exempt from the violent lateral rocking motion usually experienced in traversing curves &c. The form of the lower edge of the lug may be modified to suit the views of the builder so long as the main object is duly observed of relieving from pressure the central portion of the axle end.

WVe claim as new and of our invention herein- The lug C D E F G, constructed. as set forth, or equivalent device in the described combination with the axle and box B.

In testimony of which invention We here unto set our hands.

G. W. GEISENDORFF. J. C. GEISENDORFF.

Attest:

GEO. H. KNIGHT, AND. I. HUsToN. 

